The fourth installment of submission-only grappling series Metamoris will be headlined by a stunt-match that makes very little sense from a competitive standpoint, but we’ll probably watch it anyway. According to an MMAFighting report, Metamoris 4 (August 9th, Los Angeles) will feature freshly-retiredsuperheelChael Sonnen vs. highly decorated jiu-jitsu champion Andre Galvao.

Though Sonnen will enjoy a size advantage against Galvao — who has spent most of his competitive grappling career between 181-194 pounds, and used to compete in MMA as a welterweight — this is a talent mismatch of cosmic proportions. Galvao’s accomplishments include seven gold medals at the BJJ World Championships between 2002-2008, and three golds at the ADCC Submission Wrestling World Championship, including his first-place finishes in the 88kg and Absolute categories in 2011.

Sonnen has no such pedigree to rely on. His effective ground-game earned him submission wins against Mauricio Rua and Brian Stann later in his UFC career, but keep in mind, this is the guy who used to get subbed by Brazilians on a regular basis. Our prediction: Sonnen sells a lot of tickets, then gets styled on. (And I guess Metamoris doesn’t drug test its competitors, huh.)